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All Categories > PEM® Brand Fasteners for Metal Sheets and Panels > Studs and Pins for Sheet Metal > Flush-Head Studs – Types FH, FH4, FHA, FHP, FHS, FHX > Flush Head Unthreaded Studs – Types FH, FHS, FHA > Self-Clinching Pins - Type FH, FHS, FHA - Unified > Part # FH-137-4ZI  

Part # FH-137-4ZI, Self-Clinching Pins - Type FH, FHS, FHA - Unified

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PEM® self-clinching studs are installed by placing them in properly sized holes in the sheets and squeezing into place with any standard press. The squeezing action embeds the head of the stud into the sheet. The metal displaced by the head flows smoothly and evenly around the ribs and into the annular groove – creating a flushhead assembly and securely locking the stud into the sheet with high torque-out and pushout resistances.

FH (flush-head) studs are available in aluminum, steel, or stainless steel . They are also available unthreaded on special order.
  • Flush-head for sheet thickness of .040” and greater.
  • Type FH is recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 80 or less and HB (Hardness Brinell) 150 or less.
  • Type FHS is recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 70 or less and HB (Hardness Brinell) 125 or less.
  • Type FHA is recommended for use in aluminum sheets HRB (Rockwell “B” Scale) 50 or less and HB (Hardness Brinell) 82 or less.




 Specifications   

Pin Dia. Code
137

Length Code
4

Min. Sheet Thickness
.040 in

Hole Size in Sheet + .003 - .000
.157 in

P - Nominal Pin Diameter ± .0021

 View
.137 in

L - Length ± .015
.250 in

H ± .015
.230 in

S Max.2
.090 in

Min. Dist. Hole C/L to Edge
.28 in

For Use in Sheet Hardness
HRB 80 / HB 150 or less

Fastener Material
Heat-Treated Carbon Steel

Standard Finish
Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

CAD Supplier
PennEngineering® (PEM®)
1 Other pin diameters can be specified.
2 Pin diameter may exceed max. in this region.


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·  FH_Installed



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